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Zhu X, Zheng J, Gao Y, Xue J, Hu G, Che W, Song Z, Liu J, Huang T, Wu P. Application of Biological Glue-Clay Composite Substrate in Slope Ecological Restoration. Polymers (Basel) 2023; 15:3763. [PMID: 37765617 PMCID: PMC10534411 DOI: 10.3390/polym15183763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 09/11/2023] [Accepted: 09/12/2023] [Indexed: 09/29/2023] Open
Abstract
Given the issues of soil cracking, poor water retention during drought, and erosion damage caused by rainfall, we conducted an in-depth study on the water retention properties, cracking resistance, and scouring resistance of biogel-amended clay using evaporation cracking and scouring tests. The hydrophysical properties and cohesive aggregation mechanism of biogel-amended clay were explored, and the results showed that the incorporation of biogel improved the water retention, cracking resistance, and scour resistance of the clay samples. With an increase in the biogel content, the biogel mucous membrane inside the samples improved the cohesion between soil particles, reduced the generation and development of cracks, and improved the cracking resistance. There was no significant cracking of the samples after the biogel content reached 0.3%, which changed the migration of water in the sample, prevented water evaporation, and improved the water retention of the clay samples. Biofilm can change the migration of water in the sample, prevent some evaporation, and reduce the evaporation rate. To a certain extent, it can enhance the water retention capacity of the sample. Enhanced biofilm content significantly reduced scouring in the process of rainfall and runoff erosion of the sample, and biofilm content of 0.2% significantly reduced the surface of the specimen damaged by erosion. The hydrophysical properties of the composite-adhesive-amended clay samples were significantly improved compared with those of the single-bioadhesive-amended clay samples.
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Affiliation(s)
- Xufen Zhu
- School of Earth Sciences and Engineering, Hohai University, Nanjing 210098, China
| | - Jiaqiang Zheng
- School of Earth Sciences and Engineering, Hohai University, Nanjing 210098, China
| | - Yuliang Gao
- Jiangsu Institute of Geology and Minerals Investigation, Jiangsu Geological Bureau, Nanjing 210000, China
| | - Jian Xue
- Jiangsu Institute of Geology and Minerals Investigation, Jiangsu Geological Bureau, Nanjing 210000, China
| | - Guochang Hu
- Jiangsu Shanshui Ecological Environment Construction Engineering Co., Ltd., Nanjing 210018, China
| | - Wenyue Che
- School of Earth Sciences and Engineering, Hohai University, Nanjing 210098, China
| | - Zezhuo Song
- School of Earth Sciences and Engineering, Hohai University, Nanjing 210098, China
- School of Engineering, Royal Melbourne Institute of Technology, Melbourne, VIC 3001, Australia
| | - Jin Liu
- School of Earth Sciences and Engineering, Hohai University, Nanjing 210098, China
| | - Tingwei Huang
- School of Earth Sciences and Engineering, Hohai University, Nanjing 210098, China
| | - Peng Wu
- School of Earth Sciences and Engineering, Hohai University, Nanjing 210098, China
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